Introducing just numbers form an interval in a TextField in Java

Question

How can I add just numbers betwwen 0 and 255 in a FormattedTextField in Java?

I tried this way :

private JFormattedTextField text4;
//...
text4= new JFormattedTextField(paymentFormat);
    text4.getValue();
    text4.setColumns(3);
    try {
        MaskFormatter mask = new MaskFormatter("###");
        mask.install(text4);
    } catch (ParseException ex) {
       System.out.print("Valoarea nu e corecta");
    }

and it doesn`t work...

IT DISPLAYS : "THE VALUE IS NOT CORRECT" JUST AFTER I COMPILE THE PROGRAM. MOREOVER, THIS SOLUTION COULD WORK FOR EVERY NUMBER BETWEEN 0 AND 999... — , Mar 07 '13 at 15:18
See [this answer](http://stackoverflow.com/a/13424140/1076463), and simply adjust the `java.text.Format` to only accept values between 0 and 255 — Robin, Mar 07 '13 at 16:25
and is there any possibility not to let me type incorrect values(letters) instead of returning an exception if i type a letter? — , Mar 08 '13 at 11:29

score 1 · Answer 1 · edited May 23 '17 at 12:11

1

there are two ways

use JSpinner instead of JFormattedTextField, to set proper range in SpinnerNumberModel
add DocumentFilter to JFormattedTextField, and determine if Integer, Double value is less than 0 and more than 255
setMinimum / setMaximum for proper XxxFormatter
add DocumentListener to display overloading for JFormattedTextField

edited May 23 '17 at 12:11

Community

1
1

answered Mar 07 '13 at 13:56

mKorbel

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Introducing just numbers form an interval in a TextField in Java

1 Answers1